CLI Reference Guide-R04

Chapter 25 | Multicast Filtering Commands
IGMP Snooping
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ip igmp snooping
mrouter-forward-
mode dynamic
This command configures multicast router ports to forward multicast streams only
when multicast groups are joined. Use the no form to disable it.
Syntax
ip igmp snooping mrouter-forward dynamic
no ip igmp snooping mrouter-forward
Default Setting
Disabled
Command Mode
Global Configuration
Example
The following example enables IGMP snooping globally.
Console(config)#ip igmp snooping mrouter-forward dynamic
Console(config)#
ip igmp snooping
priority
This command assigns a priority to all multicast traffic. Use the no form to restore
the default setting.
Syntax
ip igmp snooping priority priority
no ip igmp snooping priority
priority - The CoS priority assigned to all multicast traffic. (Range: 0-7, where
7 is the highest priority)
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
This command can be used to set a high priority for low-latency multicast traffic
such as a video-conference, or to set a low priority for normal multicast traffic not
sensitive to latency.
Example
Console(config)#ip igmp snooping priority 6
Console(config)#